Drill-sharpener.



J- DITSGN.

DRILL SHARPENER.

APPucATloN man rea. 1s.

J. DITSON.

DRILL SHARPENER. AmlcATaoN FILED ma. 16.1911.l

Pam-,ea Mw. 12, ma.

2 SHEETS-SHEET 2.

UNITE@ STATE@ PATENT FFIQE,

JESSE DITSON, LITTLETON, COLORABO, ASSIGNOR TO THE J". GEO. LEYNER ENGINEERING VORKS COMPANY, OF LITTLETON, COLORADO, A CORPORATION OF COLORADO.

DRILL-Sl-IARPENER.

Application filed February 16, 1917.

To all whom t may concern:

Be it known that I, JESSE DITsoN, a citizen of the United States, residing at Littleton, in the county of Arapahoe and State of Colorado, have invented a certain new and useful Improvement in Drill-Sharpeners, of which the following is a specification.

rI'his invention relates to drill Sharpeners, and especially to that type of drill Sharpener which is operated by fluid or pneumatic pressure.

The objects of my invention are to improve the drill Sharpener as at present used and especially to provide a jet or jets of the fluid,which is usually compressed air, to the working faces of the vise forming a part of the drill Sharpener, in order that the work engaging faces and the work itself maybe kept free from scale and dirt and the work engaging faces prevented from becoming overheated.

WV ith these and other objects in view my invention consists in the particulars of construction and combination of parts set forth in this specification and pointed out in the claims.

In the drawings, which are annexed hereto and form a part of this application,

Figure 1 is a Side elevation of my invention shown partly in section,

Fig. 2 is a horizontal section taken on the line X-X of Fig. 1, and

Fig. 3 is a front elevation of my invention.

The construction of my drill Sharpener comprises a base 1, which is fitted to receive on a flange 2 at its upper part a cylinder 3 which is formed as a part of the anvil block of the vise 4. In this cylinder 3 a piston 5 of large diameter operates to close the vise through the medium of one or more posts 6 which are attached to the crosshead 7 forming the upper portion of the vise. Attached to the piston 5 is a stem 8 forming a piston of smaller diameter than the piston 5 by which the upper jaw member of the vise is raised and the piston 5 is utilized only to depress this jaw member. At one Side of the Sharpener is a valve chest 9 receiving a supply of fluid, which is usually compressed air, from a source of supply 10. The valve 11 which operates in the valve chest 9 is controlled by a lever 12 to distribute the Huid pressure to open and close the jaw members Specification of Letters Patent.

Patented Mar. 12, 1918.

Serial No. 149,032.

of the vise and also to reciprocate the sharpening tool 13. An auxiliary valve 14 is located at a point near the main valve 11 and is also operated by the handle or lever 12. Preferably I open this auxiliary valve 14 by a reverse movement of the handle or lever 12 from its vertical position, which is the position of the lever when the jaw members are open. Leading from this valve 14. is a passage 15 for the operating fluid passing through the body of the anvil block to an annular groove around the borel in this block for the post 6. A radial passage 17 extends through the post 6 to another radial passage 19 extending to an annular groove 2O in the crosshead 7. From this annular groove 20 passages 21 extend to the work engaging faces of the tool. It will be seen from this construction that the passage 15, which is controlled by an additional movement of the operating lever 12, is open only when the crosshead 7 is in its raised position, for the reason that in any other position the radial passage 17 through the post 6 does not register with the annular groove 16.

In opera-tion, after my device has been used for sharpening a tool or other implement, the lever 12 is returned to its vertical position by which the crosshead 7 is raised by the action of the fluid on piston 8. The jaws then are open, and the work, which frequently becomes coated with scale is free to be removed. In order, therefore, to properly clean and cool the work engaging faces of the vise and the sharpening implements, for subsequent use, the lever 12 is given a slight reverse movement sufficient to open the auxiliary valve 14 which allows a current or jet of the operating fluid to pass directly to the work engaging faces, thus not only cleaning these faces of any scale or dirt that may be left upon them, but also cleaning the work itself and also cooling all of these parts and preventing them from becoming overheated. AS has been said before, the passages leading to these faces can only be open when the jaw itself is open, for the reason that there would be no purpose in allowing this current of fluid to pass when the jaws are in their closed position.

It is to be understood that the present showing and description discloses only one specified modification of the present inven-` tion and other forms and embodiments are included within the spirit and scope thereof, as expressed in the claims.

Vhat l claim is:

l. In a fluid operated tool, a controlling lever to operate the valve controlling the distribution of fluid to the parts of said tool and an auxiliary valve operated by sa id lever to control the admission of fluid to the work engaging faces of said tool.

2. ln a luid operated vise provided with a movable and a stationary jaw member, a piston `operated post for raising and lowering said movable jaw member, said post and movable jaw member being provided with a passage leading from a fluid supply to the `tace of one of the jaws, said passage being opened and closed by movement of the post.

3. In a fluid operated vise, in combination, a base containing a stationary jaw member, a movable jaw member coacting therewith, means comprising a piston and Copies of this patent may be obtainedfor post for operating said movable jaw member, said base, post and movable jaw inember provided with fluid. passages whereby fluid may besupplied to the work engaging face of one of the jaw members'when the movable jaw member is raised.

il. In a fluid operated vise, in combination, abase containing a stationary jaw member, a movable jaw member coacting therewith, means Comprising a piston and post Jfor operating said movable jaw member, said base, post and movable jaw meniber provided with passages leading from a source Vof fluid supply to the Work engaging face of one of the jaw members, the passages in said base and post being in alinement only when said movable jaw member is raised.

In testimony whereof, I have hereunto set my hand. Y v

.nassn DiTsoN.

ve cents'each, by addressing the Commissioner of Patents,

Washington, D. C. Y 

